Summary:
I have to say we were a little apprehensive of the "O" class ships (Marina and Riviera) as we have only cruised on the 3 other R class ships. We thought we would be overwhelmed with the numbers of persons. We both were pleasantly surprised that is not the case. Oceania has a winning product with their new ships.
Service - Excellent
Aft section rooms have issues with elevators as there a too few.